I wasn't terribly fond of the idea of needing an initrd or weird boot options to support root raid on a sparc, so I hacked on the sun disk label support a bit to pass "Linux raid autodetect" partitions up to md. The extra breakout of the disk label struct is from the fdisk source, hopefully it's not obsolete. With this I can boot to a root raid0 on a sparc 10, but it should of course work on any set of disks w/ proper magic. Patch attached for 2.4.20-pre7/8. Please CC on followup. Thanks, Alex Williamson